Authenticating Your Client

Certain Google Play services (such as Google Sign-in and App Invites) require you to provide the
SHA-1 of your signing certificate so we can create an OAuth2 client and API key for your app. To
get your SHA-1, follow these instructions:

Open a terminal and run the keytool utility provided with Java to get the SHA-1 fingerprint of the
certificate. You should get both the release and debug certificate fingerprints.